Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Clay materials from the Central Valley of Costa Rica and their possible ceramic uses
AbstractThe clays of the region under investigation are of two principal origins: (1) sedimentary, and (2) residual.The residual clays derive from hydrothermal or lateritic transformation of volcanic and sedimentary rocks. The marine sedimentary clays appear in the NE part of the region investigated (Peralta area) and, with volcano-sedimentary types, in the area of Colón. Peralta clays contain carbonates and montmorillonite, those of Colón are illitic.Lacustrine clays are found in the old basin of Rio Grande, but show total hydrothermal transformation.The residual hydrothermal clays are very common and abundant as a consequence of the presence, still active, of many warm water springs related to the volcanic structure of the region. These clays are always rich in quartz, are generally kaolinitic, but also contain illite. The residual clays of lateritic transformation are equally rich in quartz, but the prevailing clay mineral is smectite. Amorphous phases are frequently present.From the industrial point of view kaolinitic and illitic hydrothermal clays are the most interesting as they can be used, with the addition of feldspathic volcanic rocks (Costa Rica does not produce feldspar), to make grès tiles. The volcano-sedimentary clays can be employed with limestone in the manufacturing of porous tiles.
Clay materials from the Central Valley of Costa Rica and their possible ceramic uses
AbstractThe clays of the region under investigation are of two principal origins: (1) sedimentary, and (2) residual.The residual clays derive from hydrothermal or lateritic transformation of volcanic and sedimentary rocks. The marine sedimentary clays appear in the NE part of the region investigated (Peralta area) and, with volcano-sedimentary types, in the area of Colón. Peralta clays contain carbonates and montmorillonite, those of Colón are illitic.Lacustrine clays are found in the old basin of Rio Grande, but show total hydrothermal transformation.The residual hydrothermal clays are very common and abundant as a consequence of the presence, still active, of many warm water springs related to the volcanic structure of the region. These clays are always rich in quartz, are generally kaolinitic, but also contain illite. The residual clays of lateritic transformation are equally rich in quartz, but the prevailing clay mineral is smectite. Amorphous phases are frequently present.From the industrial point of view kaolinitic and illitic hydrothermal clays are the most interesting as they can be used, with the addition of feldspathic volcanic rocks (Costa Rica does not produce feldspar), to make grès tiles. The volcano-sedimentary clays can be employed with limestone in the manufacturing of porous tiles.
Clay materials from the Central Valley of Costa Rica and their possible ceramic uses
Bertolani, Mario (Autor:in) / Loschi Ghittoni, Anna G. (Autor:in)
Applied Clay Science ; 1 ; 239-254
16.07.1985
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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